Bunuel wrote:
A rectangle has length y feet and width z feet. What is its area in square feet?
(1) z is the reciprocal of y.
(2) The fence around the perimeter of the rectangle is 720 feet.
Forget conventional ways of solving math questions. For DS problems, the VA (Variable Approach) method is the quickest and easiest way to find the answer without actually solving the problem. Remember that equal numbers of variables and independent equations ensure a solution.
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